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Metal Mine ›› 2015, Vol. 44 ›› Issue (11): 45-50.

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ABAQUS Simulation of Pressure Relief Control Technology for High-stress Roadway

Liu Bin1,2,3,Hou Dade1,2,3,Sun Guoquan1,2,3   

  1. 1.Sinosteel Maanshan Institute of Mining Research Co.,Ltd.,Maanshan 243000,China;2.State Key Laboratory of Safety and Health for Metal Mine,Maanshan 243000,China;3.Huawei National Engineering Research Center of High Efficient Cyclic and Utilization of Metal Mineral Resources Co.,Ltd.,Maanshan 243000,China
  • Online:2015-11-15 Published:2015-12-16

Abstract: Because of the large geo-stress of soft rock roadway with high stress,the conventional support technology can not meet requirement of roadway support,resulting in many times of tunnel maintenance and the corresponding security risks.Based on ABAQUS software,the finite element analysis model for high stress relief roadway control technology is established.Drucker-Prager model of rock is adopted to analyze respectively the stress and strain in protecting roadway surrounding rocks of pressure-relief tunnel in different location,different excavating sequences and different relative distances.The results show that the pressure-relief roadways can significantly improve the stress concentration around the roadway with high stress,which is conducive to keep the stability of roadway structure.The conclusion is:1) pressure relief tunnel is firstly excavated,followed by the main tunnel,2) the optimal supporting locates at 4m from the main tunnel,and 3) different relative position of pressure-relief tunnel is selected for different direction of pressure arrival.The simulation results provide a reference for the design of similar high-stress roadway.

Key words: Underground mining, High stress, ABAQUS, Pressure-relief roadway